Nickel and palladium nanocomposite carbon aerogels as recyclable catalysts for Suzuki–Miyaura reaction under aerobic and phosphine-free conditions in water

Nickel-Catalyzed Suzuki-Miyaura Coupling in Water for the Synthesis of 2-Aryl Allyl Phosphonates and Sulfones

An operationally simple and green protocol using a NiSO4·6H2O/cationic 2,2'-bipyridyl ligand system as a water-soluble catalyst for the coupling of arylboronic acids with (2-haloallyl)phosphonates and (2-haloallyl)sulfones in water under air was developed. The reaction was performed at 120 °C with arylboronic acids (2 mmol) and (2-haloallyl)phosphonates or sulfones (1 mmol) in the presence of 5 mol % of the Ni catalytic system in a basic aqueous solution for 1 h, giving the corresponding 2-aryl allyl phosphonates or sulfones in good to excellent yields. This reaction features the use of an abundant transition metal as a catalyst in water and exhibits high functional group tolerance, rendering it an eco-friendly procedure.

Suzuki–Miyaura cross coupling reaction: recent advancements in catalysis and organic synthesis

Suzuki–Miyaura cross coupling reaction (SMCR) – A milestone in the synthesis of C–C coupled compounds.

Tuning and enhancement of the Mizoroki–Heck reaction using polarized Pd nanocomposite carbon aerogels

The application of a positive electric field on a Pd(0)–carbon aerogel nanocomposite catalyst enhances the reaction rate of a Mizoroki–Heck reaction.

A simple hydrophilic palladium(II) complex as a highly efficient catalyst for room temperature aerobic Suzuki coupling reactions in aqueous media

A study on room temperature Suzuki cross-coupling in an aqueous medium was carried out using a simple hydrophilic palladium (II) complex, trans-PdCl₂(NH₂CH₂COOH)₂ as catalyst in the presence of K₂CO₃ in air. This approach with a comparatively inexpensive and hydrophilic catalyst, mild reaction condition and aqueous media exhibits excellent catalytic activity towards the Suzuki coupling of aryl bromides and arylboronic acids, and good yields were obtained in the Suzuki coupling of activated aryl chlorides.

Suzuki Cross-Coupling of Aryl Halides with Phenylboronic Acid Catalysed by an Amidoxime Fibres-Nickel(0) Complex

Amidoxime fibres–nickel(0) complexes [Ni(0)–AOFs] were synthesised by combining a Ni2+-solution with amidoxime fibres and reduced by NaH2PO2. The Ni(0)–AOFs are inexpensive phosphine-free recyclable heterogeneous catalysts for the Suzuki coupling reaction of aryl halides with phenylboronic acid to provide the corresponding biphenyls in high yields. The heterogeneous catalyst can be readily recovered by simple filtration and reused several times without significant loss of activity.